Question

copper sulphate solution is regarded as a mixture while copper sulphate itself is a pure substance. give reason​

Answer 1

Answer:

CuSO4. 5H2O is a pure substance as it has fixed composition and can be broken down into elements by electrochemical reactions. Hence, CuSO4. 5H2O is a pure substance.

Explanation:

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Answer 2

Answer:

Electrorefining of copper:

Anode: Impure copper or crude copper.

Cathode: Pure copper.

Electrolyte: 15% Solution + 5%

When electric current is passed through the electrolyte, the anode gradually dissolve and pure copper is deposited on the cathode which gradually grow in size. The impurities like. Fe, Zn, Ni etc,dissolved in the solution as sulphates while gold, silver, platinum settle down below the anode as

Explanation:

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